US10865A - Improvement in flexible harrows - Google Patents

Description

UNrrED STATES i ATENT Gin-ica0 i WV. B. RAMSAY AND GI M. RAMSAY, OF SOUTH STRA/BANE, PENNSYLVANIA.

IMPROVEMENT IN FLEXIBLE HARROWS.

Sfeeifieation forming part of Letters Patent No. 10,865, dated May Q, 1854.

.'Z'o all 'whom fit may concera:

Be it known that we, W. B. RAMSAY and G. M. RAMSAY, of South Strabane, in the county ofWashington and State ofPennsylyania,have invented a new and useful Improvement in Flexihle Harrows; and We do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawing, forming a part of this specification. which represents a plan or bird's-eye view of the harrow constructed and arranged after our plan.

The nature of ourinventi'on consists in constructing a flexible harrow of three separate parts or squares and making said squares of sueh proportions and arranging them in such relation to each other that one of their diagonal lines will run parallel to'the line of travel and the other transverse thereto, whereby we are enabled to obtain a greater breadth ofsweep than is secured with a harrow composed ot' four parts and arranged and jointed together in the ordinary way, and also to connect the whole together by three hinges -or flexible joints arranged in the position of a right-angle trian gle, by which position we secure a greater freedom and diversity of motion than can be obtained by any other position of the same number of flexible joints or hinges.

To enable others skilled in the art to make and use our invention, we will proceed to describe its construction and operation.

A B represent the two hind parts or squares. These are arranged as shown in the drawing, their ends U D being cut to angles of fortyfive degrees and placed opposite each other, and are conueeted together' by a flexible hinge, a, and made to resemble a loose miter-joint. By thus placing the squares we obtain a much broader sweep than has ever been secured by the harrows eomposed of four parts of similar size. Thus expense of one part in constructing the harrow is saved.

E represents the front part. This is shaped so as to fit the other parts, A B, as seen in the drawing, and is Connected by two of its ends to the hind parts, A B, by flexible hinges Ior joints b c, as seen in the drawing. The joints a b c are placed in the position to form a rightangle triangle, and are so shaped that they allow ofany movement to the harrow. By thus placiug the hinges or joints a great number of movements are secured Which are not obtained by the harrows in use, and therefore our harrows possess another advantage beside that of cheapness'-viz., that. of tilling more perfectly than heretofore irregular and uneven-surfaced lands, and especially' when harrowing ridges longitudinally, the'front section may ride upon a high furrow and tear it down, While the other two sections fit over the ridge and harrow both sides of it.

The teeth d efmay be placed in the harrow, as seen in the drawing.

W'hat' we claim as our invention, and desire to secure by Letters Patent, is- The pecnliar arrangement, herein described and shown in the drawing, of the three parts of the harrow and the'three fiexuousjoints conneeting-the sanietogether, in combination with the construction ot' saidjoints, which allows of the several parts very freely and perfectly adjustiug themselves up and down independent of each other in passing over the undulating surface'of the soil, substantially as and tor the purpose hereiu described. By thus arranging and couibining' the 'several parts of the harrow we are enabled to simpllfy its construction, lessen its cost, and render it capable of making ten more movements than any other flexible harrow known, and consequently performing the harrowing operation moreperfectly and speedily, as set forth.

WM. B. RAMSAY. GEO. M. RAMSAY.

Witnessrs as to signature of W. B. Ramsay:

PETER KENNEDY, J. L. J UDsoN.

VVitnesses as to signature of Geo. M. Ramsay a O. D. MUNN, E. 0. PoLHAMUs.

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